- remade file names in the app

- fixed the issue with factory_defaults being saved every time the app start
- fixed the preferences not being saved to a file when the Save button is pressed in Edit -> Preferences
- fixed and updated the Transform Tools in the Editors

FlatCAM.py

@@ -3,8 +3,8 @@ import os
 
 from PyQt5 import QtWidgets
 from PyQt5.QtCore import QSettings, Qt
-from App_Main import App
-from AppGUI import VisPyPatches
+from app_Main import App
+from appGUI import VisPyPatches
 
 from multiprocessing import freeze_support
 # import copyreg